Compact wide-angle zoom lens

Details Compact wide-angle zoom lens Compact wide-angle zoom lens

1991-02-14

1992-06-30

Sugarman, Scott J.

Optical: systems and elements

Lens

With variable magnification

G02B 1514

Patent

active

051268841

ABSTRACT:
In a compact wide-angle zoom lens which has, in succession from the object side, a first lens unit of positive refractive power and a second lens unit of negative refractive power and in which a magnification change is effected by the relative unit spacing between the two lens units being varied, the first lens unit has at least two negative lens components and at least one positive lens component, and one of the at least two negative lens components is disposed most adjacent to the object side of the first lens unit, and has a negative meniscus shape having its convex surface facing the object side.

REFERENCES:
patent: 4756608 (1988-07-01), Itoh
patent: 4883346 (1989-11-01), Aoki et al.
patent: 4911539 (1990-03-01), Tsunashima et al.

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